BIO270H1 Lecture Notes - Lecture 11: Enteropeptidase, Amylase, Abomasum
Document Summary
Lecture 11 (december 2, 2015): digestion and energy metabolism. Evolutionary variation in structure and function of excretory. There are two different types of primitive analogs of the nephron: protonephridium. Use this vacuole to pump fresh water out of the body. Cilia produce a current down the protoephridium. Not as evolved and not as many cell types as the nephron. There are perforations in cap cell, so that the current made by the flagella are a sort of filter: metanephridium. Stimulate cation transport at basolateral and apical membrane. Stimulate the proton atpase, stimulating secretion or production of primary urine. Also have a bladder that can store primary urine until it can be released. Has a nephrostone: open to the body cavity and collects solutions from the. Longer in organisms that live in or near fresh water body cavity, it does not filter. Malpighian tubules: insect kidney, urine is formed by secretion, not by filtration.
